Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-55956— Apache Tomcat: Security constraints for default servlet ignored method

AI Predicted 7.5 Difficulty: Easy EPSS 0.38% · P30

Possible ATT&CK Techniques 1AI

T1078 · Valid Accounts

Affected Version Matrix 6

VendorProductVersion RangeStatus
Apache Software FoundationApache Tomcat11.0.0-M1≤ 11.0.22affected
10.1.0-M1≤ 10.1.55affected
9.0.0.M1≤ 9.0.118affected
8.5.0≤ 8.5.100affected
7.0.0≤ 7.0.109affected
< 7.0.0unknown
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-55956

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Apache Tomcat: Security constraints for default servlet ignored method
Source: NVD (National Vulnerability Database)
Vulnerability Description
Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache Tomcat 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Software Foundation Apache Tomcat是Apache Software Foundation基金会的应用服务器。 Apache Tomcat存在授权问题漏洞，该漏洞源于授权不当，导致为默认servlet指定的安全约束忽略配置的方法或方法省略。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Apache Software FoundationApache Tomcat 11.0.0-M1 ~ 11.0.22 -

II. Public POCs for CVE-2026-55956

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-55956

请登录查看更多情报信息。

Mailing List Discussions for CVE-2026-55956 (1)

Same Patch Batch · Apache Software Foundation · 2026-06-29 · 7 CVEs total

CVE-2026-55957Apache Tomcat: Authentication bypass with JNDIRealm and GSSAPI authenticated bind
CVE-2026-55955Apache Tomcat: EncryptInterceptor not protected against replay attacks
CVE-2026-55276Apache Tomcat: Logged effective web.xml is incomplete
CVE-2026-53434Apache Tomcat: Invalid CRL configuration doesn't trigger failure for FFM Connector
CVE-2026-53404Apache Tomcat: Bad ornext processing in RewriteValve
CVE-2026-50229Apache Tomcat: XSS in number guess example

IV. Related Vulnerabilities

Same product: Apache Tomcat
Same vendor: Apache Software Foundation
Same weakness: CWE-285

V. Comments for CVE-2026-55956

No comments yet

Leave a comment